<template>
    <div class="login-container">
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">
        <div class="title-container">
          <h3 class="title">{{ $t('login.title') }}</h3>
          <LangSelect class="text" />
        </div>
        <el-form-item prop="username">
          <span class="svg-container">
            <SvgIcon icon-class="user" />
          </span>
          <el-input ref="username" v-model="loginForm.username" :placeholder="$t('login.username')" name="username" type="text" tabindex="1" auto-complete="on" />
        </el-form-item>
        <el-form-item prop="password">
          <span class="svg-container">
            <SvgIcon icon-class="password" />
          </span>
          <el-input
            ref="passwordRef"
            :key="passwordType"
            v-model="loginForm.password"
            :type="passwordType"
            :placeholder="$t('login.password')"
            name="password"
            tabindex="2"
            auto-complete="on"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <SvgIcon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
        <el-button :loading="isLoading" type="primary" style="width: 100%; margin-bottom: 30px" @click.native.prevent="handleLogin">{{ $t('login.login') }}</el-button>
        <div class="tips">
          <span> {{ $t('login.textTip1') }}</span>
        </div>
        <div class="tips">
          <span> {{ $t('login.textTip2') }}</span>
        </div>
        <div class="tips">
          <span> {{ $t('login.textTip3') }}</span>
        </div>
      </el-form>
    </div>
  </template>
  
  <script setup lang="ts">
  import router from '@/router'
  import { LocationQuery, LocationQueryValue, useRoute } from 'vue-router'
  import { useI18n } from 'vue-i18n'
  import { useUserStore } from '@/store/modules/user'
  
  import LangSelect from '@/components/LangSelect/index.vue'
  import SvgIcon from '@/components/SvgIcon/index.vue'
  
  import { LoginData } from '@/api/auth/types'
  import { validUsername } from '@/utils/validate'
  
  const { t, locale } = useI18n()
  
  const route = useRoute()
  const userStore = useUserStore()
  const isLoading = ref(false)
  const loginFormRef = ref()
  const passwordRef = ref()
  const passwordType = ref('password')
  const loginForm = ref<LoginData>({
    username: 'admin',
    password: '123456'
  })
  
  const validateUsername = (rule: any, value: any, callback: any) => {
    if (value.length < 1) {
      callback(new Error(t('login.passwordMsg')))
    } else {
      callback()
    }
  }
  const validatePassword = (rule: any, value: any, callback: any) => {
    if (value.length < 6) {
      callback(new Error(t('login.passwordMsg')))
    } else {
      callback()
    }
  }
  const loginRules = ref({
    username: [{ required: true, trigger: ['blur', 'change'], validator: validateUsername }],
    password: [{ required: true, trigger: ['blur', 'change'], validator: validatePassword }]
  })
  
  watch(
    () => locale.value,
    (value) => {
      nextTick(() => {
        loginFormRef.value.resetFields()
      })
    }
  )
  
  function showPwd() {
    if (passwordType.value === 'password') {
      passwordType.value = ''
    } else {
      passwordType.value = 'password'
    }
    nextTick(() => {
      passwordRef.value.focus()
    })
  }
  
  function handleLogin() {
    loginFormRef.value.validate((valid: boolean) => {
      if (valid) {
        isLoading.value = true
        userStore
          .login(loginForm.value)
          .then(() => {
            const redirect = (route.query.redirect as LocationQueryValue) ?? '/'
            console.log('redirect', redirect)
            router.push({ path: redirect, query: getOtherQuery(route.query) }).then(() => {
              isLoading.value = false
            })
          })
          .catch(() => {
            isLoading.value = false
          })
          .finally(() => {})
      }
    })
  }
  
  const getOtherQuery = (query: LocationQuery) => {
    return Object.keys(query).reduce((acc: any, cur: string) => {
      if (cur !== 'redirect') {
        acc[cur] = query[cur]
      }
      return acc
    }, {})
  }
  </script>
  
  <style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */
  
  $bg: #283443;
  $light_gray: #fff;
  $cursor: #fff;
  
  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }
  
  /* reset element-ui css */
  .login-container {
    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;
  
      .el-input__wrapper {
        width: 100%;
        padding: 0;
        background-color: transparent;
        box-shadow: none;
  
        input {
          background: transparent;
          border: 0px;
          border-radius: 0px;
          padding: 12px 5px 12px 15px;
          color: $light_gray;
          height: 47px;
          caret-color: $cursor;
  
          &:-webkit-autofill {
            box-shadow: 0 0 0px 1000px $bg inset !important;
            -webkit-text-fill-color: $cursor !important;
          }
        }
      }
    }
  
    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(0, 0, 0, 0.1);
      border-radius: 5px;
      color: #454545;
    }
  }
  </style>
  
  <style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #eee;
  
  .login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;
  
    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }
  
    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;
  
      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }
  
    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }
  
    .title-container {
      position: relative;
      display: flex;
      align-items: center;
  
      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
      .text {
        color: white;
        margin-bottom: 40px;
      }
    }
  
    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
  </style>
  